Tennis teaching aid



FIG. 1 is a left rear perspective view of the tennis teaching aid;

FIG. 2 is a rear view of the tennis teaching aid;

FIG. 3 is a front right perspective view of the tennis teaching aid;

FIG. 4 is a front view of the tennis teaching aid;

FIG. 5 is a left side view of the tennis teaching aid showing the tennis ball target feature in the retracted position;

FIG. 6 is left side view of the tennis teaching aid showing the tennis ball target feature in the projected position; and,

FIG. 7 is a right side view of the tennis teaching aid showing the tennis ball target feature in the projected position.

The broken lines in the drawing figures illustrating logo indicia depict environment and form no part of the claimed design. 

CLAIM The ornamental design for a tennis teaching aid, as shown and described. 